Truck connection.



I]. STEVENS. TRUCK CONNECTION, APPLICATION I ILBD MAY-1, 1913.

Patented Nov; 18; 1913.

Ghana EVIE'STEVENS, F STILLWATER, BRITISH COLUMBIA,

TRUCK CONNECTION;

Specification of Letters Patent;

Application filed May 1, I913. Serial-Nu 764,863:

To all whom it may concern: Be it known that I, EVIE STEVENS, a citizen of the United States of America,and aresident of the city of Stillwater, in the Province of British Columbia and Dominion of Canada-,'have invented certain new and useful Improvements in Truck Connections,

of which the following is a specification.

My invention relates to center connections for logging trucks, and it resides in the novel features, arrangements and combinations of parts hereinafter described, and succinctly defined in the annexed claims.

The primary object of the invention resides in the provision of an eflicient anddurable locking connection wherein the king bolt is eliminated and unauthorized displacement of the bunk obviated.

For a full understanding of the present invention reference is to be had to the following description and the accompanying drawing, in which Figure 1 is a plan view of a truck embodying my invention, some of the parts being broken away; Fig. 2 is a section on-line 2-2 of Fig. l, the center bearing being in elevation, Fig. 3 is a similar view taken on line 33 of Fig. 1, and Fig. 4 is a view taken along line H of Fig. 2.

Referring in detail to the drawing, 1 indicates the truck bolster supported in the usual manner on the diamond arch bar type of truck frame. The bolster is provided with a central recess 2 having on its inner wall the locking lugs 3 which are spaced to form the grooves 4.

On the bunk 5, Iprovide a center bearing comprising a hub 6 resting on its bearing 1 and a reduced hub section 7 depending from said hub 6 and having its bearing 2 in the recess 2 of the bolster. The hub 6 and the depending section 7 are each provided with oppositely extending locking shoulders 8, 9, respectively, the last mentioned shoulders op crating in the annular groove or spacebetween the lugs 3 and the bearing 2 and having ac-. cess thereto through grooves 4. The shoulders 8 engage beneath the flanges 10 extending inwardly from upward projections 10 carried by the bolster, said shoulders entering beneath the flanges 10 through the spaces 11. The shoulders 8, 9, fitfreely beneath their corresponding locking elements We permit of vertical play between the bunk nd holster. When the bunk is in its normal position the shoulders 8 and 9 are disposed at right angles to the spaces 1.1 and grooves 4, whereby an abnormal disposition of the bunk is requisite to efi'ect a displacementofthe center bearing.

To prevent any displacement whatever of the hub, locking pins or plugs 12 are inserted in the grooves' l to fill or close the latter, and

comprise headed stems, the heads thereof" seating in the pockets 13, leading from the said grooves, for supporting the stems. The

stems of each pin has formed therein a'semicircular recess adapted to register with a bore in the bolster for the reception of a bolt 14 which retains the pin from vertical displacement, as is obvious.

In placing the bunk to the truck, the former is presented crosswise of the bolsters for clear' passage of the shoulders 8, 9 between their corresponding locking elements Patented Nov. 18, 1913'.

and, after mounting the pins 12 on the shoulders 9, is lowered to seat the hub sections on their respective bearings. Prior to the seating of the central bearing the heads of the pins engage in pockets 13 to retain the lower terminals of pins 12 clear of shoulders 9 whereby vertical play between the bolster 'and bunk may be had in any disposition of .the latter.

Having thus described my invention what I claim as new, and desire to secure by Letters Patent of the United States of America, 1s:- 4

1. In combination with a truck having a central recess and a rotatably supported bunk on the truck, spaced locking elements on said truck, spaced locking elements on the bunk engaging beneath those on the truck, and a central bearin on said bunk and projecting below the a oresaid locking elements into the recess in the truck.

2. in combination with a truck and a rotatably supported bunk thereon, spaced locking elements on the truck, spaced lockingelements on said bunk engaging under the first named locking elements, and means for closing the space between certain of said locking elements to prevent the dislodging of the second named locking elements from under the first named locking elements.

3. In combination with a truck and a rotatably supported bunk thereon, spaced locking elements on the truck, spaced locking elements on the bunk and engaging beneath the first mentioned locking elements, and

means cooperating with certain of said looking elements to prevent displacement of said bunk in any disposition.

4. In combination with a truck and arotatably supported bunk thereon, spaced locking elements on the truck, spaced locking elements on the bunk and normally engaging under the first mentioned locking elements, andlockin pins interposed between certain of said 100 ing elements.

5. In combination with a truck and a rotatably supported bunk thereon, spaced looking elements on the truck, spaced locking elements on the bunk and normally engaging- Y retaining the pins from dislod ing elements on said bunk, a locking pin in sertible between certain of said lockin elements, and a transversely disposed b0 t en gaging said pin.

7. In combination,' a truck having a mantral recess, spaced locking elements mounted Within the recess of the truck the latter having ofiset pockets between the locking elements, a bunk rotatably mounted on the truck, spaced locking elements on said bunk normally engaging beneath the first named locking elements, locking ins interposed between the first named'loc ting elements and provided with enlargements engaging in the offset pockets of the truck, and means for gment.

Signed at Seattle, Wn., this 18th day of April 1913.

EVIE STEVENS. \Vitnesses:

WALTER. Gr. MCLEAN, J. M. SPAnKMAN. 

